Boonton 9240 RF Voltmeter - Manual (Page 36)

Boonton 9240 Series RF Voltmeter
Table 3-2 CHANNEL MENU Functions
Function Description
Parameters Defaults
RTN
Returns the instrument to the n/a
previous menu.
UNITS
Units used for measurement dBm, WATTS dBm
display.
RES
Display resolution X.X, X.XX, X.XXX dBm or/ X.XX
XXX, XXXX, XXXXX Watts
BAR
Enables the bar graph on the ON, OFF ON
measurement display.
MODE
Sets the display mode for CH2,CH1+2, CH1/2 CH2
channel 2; only available when OFF
two channels are installed. The
units for sum and ratio modes
track the units selected for
channel 2.
RANGE
Selects and hols the instrument’s AUTO, 0,1,2,3,4,5,7 AUTO
measurement range. If
repetitive measurements are to
be made over a narrow range of
levels, selecting the appropriate
instrument range may speed
measurements.
ALARM
Enables alarm mode; the ∨ or ON, OFF OFF
∧ symbol is displayed before
the channel mode designator on
the measurement display to
indicate when the upper or
lower threshold limit is
Exceeded.
HI LIMIT Upper threshold limit for the -99.99 to 99.99 99.99
alarm function.
LO LIMIT
Lower threshold limit for the -99.99 to 99.99 -99.99
alarm function.
ZØ
Characteristic impedance used to 5 to 2500 Ohms 50 Ohms
calculate power.
PEAK
Displays sinewave peak instead of ON, OFF OFF
RMS.
Equal to a factor of 1.414 or +3dB.
X100
Used with 100:1 divider accessory ON, OFF OFF
Getting Started
3-10